001 /*
002 * Copyright (c) 2005 Einar Pehrson <einar@pehrson.nu>.
003 *
004 * This file is part of
005 * CleanSheets - a spreadsheet application for the Java platform.
006 *
007 * CleanSheets is free software; you can redistribute it and/or modify
008 * it under the terms of the GNU General Public License as published by
009 * the Free Software Foundation; either version 2 of the License, or
010 * (at your option) any later version.
011 *
012 * CleanSheets is distributed in the hope that it will be useful,
013 * but WITHOUT ANY WARRANTY; without even the implied warranty of
014 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
015 * GNU General Public License for more details.
016 *
017 * You should have received a copy of the GNU General Public License
018 * along with CleanSheets; if not, write to the Free Software
019 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
020 */
021 package csheets.ui.ctrl;
022
023 import java.awt.event.ActionEvent;
024 import java.awt.event.KeyEvent;
025
026 import javax.swing.ImageIcon;
027 import javax.swing.JOptionPane;
028 import javax.swing.KeyStroke;
029
030 import csheets.CleanSheets;
031 import csheets.core.Workbook;
032 import csheets.ui.FileChooser;
033
034 /**
035 * An action for closing and unloading the active workbook.
036 * @author Einar Pehrson
037 */
038 @SuppressWarnings("serial")
039 public class CloseAction extends SaveAction {
040
041 /**
042 * Creates a new close action.
043 * @param app the CleanSheets application
044 * @param uiController the user interface controller
045 * @param chooser the file chooser to use when prompting the user for the file to save
046 */
047 public CloseAction(CleanSheets app, UIController uiController, FileChooser chooser) {
048 super(app, uiController, chooser);
049 }
050
051 protected String getName() {
052 return "Close";
053 }
054
055 protected void defineProperties() {
056 putValue(MNEMONIC_KEY, KeyEvent.VK_C);
057 putValue(ACCELERATOR_KEY, KeyStroke.getKeyStroke(KeyEvent.VK_W, ActionEvent.CTRL_MASK));
058 putValue(SMALL_ICON, new ImageIcon(CleanSheets.class.getResource("res/img/close.gif")));
059 }
060
061 public void actionPerformed(ActionEvent e) {
062 Workbook workbook = uiController.getActiveWorkbook();
063 if (workbook != null) {
064 if (uiController.isWorkbookModified(workbook)) {
065 // Prompt to discard changes
066 int option = JOptionPane.showConfirmDialog(
067 null,
068 "The current workbook has been modified.\n" +
069 "Do you want to save the file before closing it?",
070 "Save changes before closing?",
071 JOptionPane.YES_NO_CANCEL_OPTION,
072 JOptionPane.WARNING_MESSAGE
073 );
074
075 if (option == JOptionPane.YES_OPTION)
076 // Saves file
077 super.actionPerformed(e);
078
079 if (!(option == JOptionPane.YES_OPTION
080 || option == JOptionPane.NO_OPTION))
081 return;
082 }
083 app.unload(workbook);
084 }
085 }
086
087 protected boolean requiresModification() {
088 return false;
089 }
090 }